Filming is underway in Glasgow for a new BBC suspense thriller. 

Set on a sleeper train travelling from Glasgow to London, Nightsleeper follows two people who have never met before - one on the train and one not - who must work together to desperately try to save passengers' lives when things take a worrying turn. 

The six-part series stars Alexandra Roach from The Light in the Hall and Gangs of London's Joe Cole.

Glasgow Times: Alexandra Roach and Joe ColeAlexandra Roach and Joe Cole (Image: BBC)

Also joining the cast is Game of Thrones actor James Cosmo, Katie Leung of the Harry Potter franchise, Still Game's Scott Reid and Sharon Rooney of Two Doors Down. 

Nightsleeper is being written by BAFTA award-winning writer Nick Leather from Fremantle’s Euston Films.

Glasgow Times: Katie LeungKatie Leung (Image: Newsquest)

Nick said: “It’s a joy to be able to write for this cast of some of the finest acting talent in the UK today - our train is a real rollercoaster, a white-knuckle trip through the heart of Britain, and I’m delighted to have them join us for the ride.”

Kate Harwood, managing director of Euston Films, added: “We are so excited to be carrying this brilliant, eclectic and precious cast on our train matched by tremendous talent in our security centre in London, it’s ‘all aboard’ as we start shooting Nick’s thrilling scripts."

Glasgow Times: Scott Reid as Methadone Mick in Still GameScott Reid as Methadone Mick in Still Game

The six episodes, each an hour long, will air on BBC One and on iPlayer later this year.

Lindsay Salt, director of BBC Drama, said: “I’m so pleased that Joe, Alexandra and this exceptional ensemble cast have all come aboard Nightsleeper as it speeds towards BBC One and iPlayer.

"Nick Leather has created an adrenaline-fuelled thriller like no other and I can’t wait to see it brought to the screen.”